export module runtime;

import app;

import coral;
import coral.files;
import coral.io;
import coral.math;
import coral.sequence;

extern "C" int main(int argc, char const * const * argv) {
	return app::display("Ona Runtime", [](app::system & system, app::graphics & graphics) -> int {
		constexpr coral::path config_path{"config.kym"};
		bool is_config_loaded{false};

		system.res_fs().read_file(config_path, [&](coral::reader & file) {
			coral::allocator * const allocator{&system.thread_safe_allocator()};

			coral::stack<coral::u8> script_source{allocator};
			{
				coral::u8 stream_buffer[1024]{0};
				coral::contiguous_writer script_writer{&script_source};

				if (!coral::stream(script_writer, file, stream_buffer).is_ok()) return;
			}

			system.log(app::log_level::notice, script_source.as_slice().as_chars());

			is_config_loaded = true;
		});

		if (!is_config_loaded) {
			coral::stack<coral::u8> error_message{&system.thread_safe_allocator()};
			{
				coral::contiguous_writer error_writer{&error_message};

				if (!error_writer.write(coral::slice{"failed to load "}.as_bytes()).is_ok())
					return coral::u8_max;

				if (!error_writer.write(config_path.as_slice().as_bytes()).is_ok())
					return coral::u8_max;
			}

			return coral::u8_max;
		}

		// app::canvas canvas_2d();

		while (system.poll()) {
			// canvas_2d.render(graphics);
			graphics.present();
		}

		return 0;
	});
}